DE2932551A1 - Tube guide system for underfloor heating - uses plates with cross channels and straight channels and pattern of guides for bends - Google Patents

Abstract

The under floor heating system which uses plates (1) which fit together along joint lines (17) to guide the heating tubes (6,7) has parallel grooves to retain the straight parts of the tubes. At the ends of these grooves are blocks (14) with a pattern of guides (15) for the bends at the ends of the tubes. Across the outer parts of these blocks is a channel (11) at right angles to the straight grooves to hold connecting elements. The sides (12) of these grooves have regular gaps (13) through them. The guides include oval shaped raised parts, one opposite each channel, with pointed intermediate parts between, front and rear. The arrangement allows different numbers of the channels to be occupied by tubes, to suit the heating requirements of the installation.

Description

T BROSE ⁰ BRÖSE

D H0? 3 Munchen-Pullach. Wrener Str 2. Xi (Q3 &) Z 93 2Ο "7ϊ. Ttfekfi 212" WT pros tf C.ibles «Patentibus-Munich

Graduate engineer

Dietrich Probst, Hegewiese i »9, 6384 Schmitten 1

Heat exchanger (radiator heat absorber)

your mark day ¹ o-august 1979

Your ret Date 1 / Hö

DESCRIPTION

The invention relates to a heat exchanger such as that used, for example, as a panel heating element for underfloor heating or as a heat absorber in the SolartecTinik is. The invention assumes that the liquid surface heating for Füß.b.ödejQ ... bek, ajint, to guide and arrange flexible pipes in a meandering shape so that the lines for flow and return of the heating medium in their straight areas alternately run next to each other and in their reversal areas Cross at both ends of the straight section, with the flexible tubes in channels of prefabricated molded panels laid and their straight area on their underside and both long sides are enclosed by heat conducting sheets, In a functional context, such surface heating consists of the insulation level and the heat conduction and Radiation level by making the mold plates from non-heat conductive Material with the meandering ducts for guiding the flexible heating pipes in bifilar laying technology exist and the heat transported through the heating pipes via the heat conducting plates and one above

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Radiation plate is released upwards.

In order to adapt to the heat demand of the room to be heated, the heating pipes must be at different distances be arranged in the Pormplatten, with less specific heat demand per square meter the heating pipes at larger intervals and if the room in question requires more heat, they can be arranged at smaller intervals in the moldings have to. The lower limit of these distances is essentially given by the permissible bending radius of the flexible pipes, which can be made of plastic or copper.

With the previously known types of surface heating mentioned this requirement of adaptation to the respective heat demand was met by the fact that for the various pipe distances, which had to be selected, also different mold plates with differently large channel spacings were used for the heating pipes to lay in these channels. The necessity of such differently designed mold plates is not only the Production and storage burdened, but there are also disadvantages and difficulties in laying the flexible Pipes and beyond cannot achieve a sufficiently uniform distribution of the heat output per unit area even with very narrow pipe spacings of 8 cm (limited by the permissible bending radius of the pipes) possible ^ a bifilar arrangement of the pipelines with always alternating supply and return lines to reach.

The invention is based on the object of eliminating these disadvantages and a heat exchanger for liquid heating or heat absorbers for other uses such as to create solar technology, in which an adaptation to the various requirements for heat output in terms of area uniformly distributed heat emission takes place with mold plates suitable for a wide variety of pipe spacings and at the same time at the same time the laying work is facilitated and the expenditure on manufacturing costs and storage is reduced.

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To solve this problem, the invention is based on the known surface heating with flexible pipes guided in a meander shape in such a way that the line / for flow and return of the medium run alternately next to one another in their straight areas and in their reversal areas at both ends of the straight areas intersect, wherein the pipes are laid in channels preformed mold plates and key in its straight portion at its bottom and on the two longitudinal sides of heat conducting: ■ '} £ to be "aft, and in order to solve its task essentially in the fact that the.! Channels of the mold plates for different laying distances of the pipes in the straight area, which are necessary depending on the specific heat output required, are arranged at the same distance from one another and in the reverse area are equipped with guides which are shaped and arranged to accommodate pipes of different bending radii and different pipe distances are Elnen can expediently the invention in such a way that the channels are arranged in the mold plates at a uniform distance from each other, which corresponds to the laying distance of the pipes for the greatest required specific heat output, i.e. the smallest possible pipe spacing in terms of the bending radius.

In general, it is advantageous that, depending on the required thermal output the laying distance of the pipes is selected according to the formula A = 10n, where η is a natural number. A special one The preferred embodiment of the invention is based on this formula on a mold plate of 1 square meter in size 10 guide channels for the pipes to be arranged evenly spaced.

In this and similar ways, the invention has very substantial advantages over all other similar known ones Heat exchangers of this type achieved.

On the one hand, there is a better heating performance through even channel structure Reached over the entire surface and when assembling the panels on the construction site do not have a joint

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2932Ü1

more that must be skipped. Furthermore is the laying technique significantly simplified, since the plates overflow into one another. It is possible to measure the depth of the channels on

in the intersection area,

double the diameter of the laid pipes ⁷ , for example to choose instead of the previously usual pipes of 14.5 mm pipes of 16 mm outer diameter and thereby lay larger heating circuit lengths with the same pump output or, conversely, the same heating circuit lengths with small pumps. At the same time, the heating output increases. Furthermore, despite these advantages, it is possible to fall below the permissible bending of the pipe with regard to the bending radius and thereby achieve a greater safety reserve with regard to the service life and the stress on the pipes.

In particular, the invention can also find its further embodiment in that the frontal cavity is limited in the mold plates in the reversal area by a straight channel wall and expediently further above An additional head channel for the intake and drainage lines is provided for the straight, frontal channel wall is. Due to the straight channel wall on the head side of the reversal area, the training is once without impairment a safe pipe routing simplified with regard to the production of the mold plates and on the other hand with correspondingly large Duct widths and pipes in the bend area also have greater freedom of movement given.

Furthermore, it is expedient to provide the walls of the head channel with openings for the introduction and execution of supply and discharge lines or to provide a straight passage of the pipes and also at least some of the guide pieces in the reversal area with such to equip straight passages of pipes.

A particularly important embodiment of the invention consists in that by the arcuate guide pieces in the Umkohrbereich laterally limited guide channels in their lateral area opposite the axes of the channels in the straight area bent on the outside. This can be despite less

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Kanalabatände in the mold plate by this design of the Guides in the reversal area avoid falling below the permissible bending radius.

Another important embodiment of the invention is that the heat conducting plates of several side by side Channels a contiguous. Form plate preferably from the width of the respective mold plate.

Further advantageous embodiments of the invention are counter ; -. t; * nd of the claims and disclosed in these claims and are explained below with reference to the drawings, in which the invention in comparison to the known prior art Technology is discussed. It shows:

Figure 1-3 shows a known type of liquid surface heater in three different types of installation;

Figure 4-6 shows an embodiment according to the invention and Figures 7-12 various structural details of the invention.

In the drawings, 1 denotes a mold plate made of heat-insulating material, which with straight lines Channels 2 and is provided with arcuate guide channels 3 to accommodate and hold heating pipes here. The straight area is with 4 and the reversal area for the pipes denoted by 5. 6 is the flow line and 7 is the return line for the heating medium inside the pipes.

Figure 1 shows a known embodiment for a practical pipe spacing of 25 cm of the pipes 6 and 7 in the straight area, so that the channels 2 cause this pipe spacing. This type of construction is used for large areas and rooms with low specific heat requirements such as warehouses, sports halls, Corridors, adjoining rooms and the like applied and results

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in the practical embodiment a heating power of approx. 70 W / n square at a surface temperature according to DIN.

If a greater heat output is required, the embodiment of FIG. 2 is necessary in the known design, at which the mold plate 1, as a comparison with FIG. 2 readily shows, has undergone a different design. Apart from that from the fact that in the reversal area 5 the guides / for the tubes 6 and 7 are designed differently, in this design the channels 2 are at a distance which is a pipe distance of 16 cm conditionally a greater heat output can be achieved on the same area close. In both embodiments of Figures 1 and

2 a bifilar laying technique for pipes 6 and 7 is possible, so in each case in the straight area 4 flow pipes 6 and Return pipes 7 lie alternately next to one another.

In the design according to FIG. 3, the mold plate 1 must again have a experience different training, and not only in the reversal area 5 with regard to the guide pieces / for the arcuate there Pipes but also with regard to the distance between the channels 2, which here in practice is 8 cm, to enable a further increased heating output. As can be seen from the drawing, however, this is already a The bifilar installation technique is no longer possible, instead the pipes 6 and 7 are spiraled into one another. The channels

3 in the reversal area are equipped in all three exemplary embodiments with a depth which is twice the outer diameter corresponds, so that the pipes do not protrude upwards out of the channels at the crossing points.

In the embodiment according to the invention shown in Figure 4-6 an embodiment is illustrated in FIG. 4, which corresponds approximately to FIG. 1 with regard to the level of heat output, while the illustration of Figure 5 approximately in its heating power according to the type of FIG. 2 and the embodiment 6 corresponds to the type of FIG. 3 in this respect.

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In comparison to the known type, however, according to the invention For example, only one type of mold plate 1 is used for 3 different heat outputs.

In this mold plate, the channels 2 are in the straight area 4 arranged at a distance of 10 cm, so that there are ten channels on a mold plate 1 m wide, or 1 square meter area are located. In the reversal area 5, the guides 14 for the pipes G, 7 are designed in such a way that they move the pipes without modification 6 and 7 in the most varied of bending radii, as they are caused by the different spacing of the channels 2, safe take in and lead. These guide pieces 14 are in the upper row of the reversal area shown in the drawing kite-shaped, egg-shaped in the middle row and heart-shaped in the lower row.

In the representations of FIGS. 4-6, the flow line 6 is drawn out and the return line 7 is shown in FIG shown dashed line formation. Both lines open into the mold plate at the same point on the top left a. The drawing shows that in the embodiment according to FIG. 4, as is desirable, in the straight area the supply and return lines alternate lie next to each other, according to the lower heat requirement between the individual, through the tubes 6 and occupied channels 2 two channels 2 remain empty. In the illustration of FIG. 5, the same condition is the alternation of Forward and reverse in the straight area fulfilled, only that a channel 2 remains free in the middle. However, to the laying technically very important condition for the lines 6, 7 to enter or exit the channels of the mold plate at the same point to meet, this embodiment has the peculiarity that in the left double loop of the line guides both Supply and return lines are connected directly next to each other.

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running and only one channel remains free between this line pair. This results in a certain unevenness of the heat output in this area of the double line routing. It However, this unevenness is practically gladly accepted compared to the technical installation advantage of an insertion and Both lines exit in the same area. In some cases, however, this unevenness in heat output can also be Desired and required if, for example, the conditions of the room to be heated result in a larger one Heat output is required.

In general, it is a very essential and characteristic advantage of the invention that there is extensive freedom and the possibility of adapting to local conditions when laying the lines in the molded plates. The uniform for the various necessary pipe guides mold plate according to the invention has caused the great advantage in place when installing an adjustment to the if appropriate, distributed over the surface, different high heat requirements to guarantee and others, even some other space moderately or structurally required constraints to in that a different pipe routing and the use of other channels in the fittings is possible, if this is required or conditioned by the local conditions.

In the embodiment according to FIG. 6, the highest Requirement for heat dissipation, all channels are covered with tubes 6, 7, but the condition of a bifilar arrangement with alternating Forward and return also fulfilled, which, as described, is not possible in the known embodiment according to FIG. 3. All three exemplary embodiments discussed have the important advantage in common that, despite the use, they are more uniform Molded plates for the various heat requirements and laying techniques of the line pipes always have a practical, even

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Distribution of the heat takes place over the plate unit.

Another special feature of the invention according to Fig. 4-6 should be mentioned, that the frontal cavity 9 in the reversal area 5, respectively is limited by a straight channel wall 10. Above this frontal channel wall 10 there is an additional one Head channel 11 for receiving inlet and outlet lines. What is essential here is the width of the head channel 11 to be dimensioned in such a way that the channel allows the pipes laid in it to expand sufficiently under the effects of heat offers. This expansion takes place in the pipes in the axial direction and amounts to about 0.5 cm per running meter. the The channel width is expediently dimensioned in the practical area in such a way that it allows the pipes to be laid over a length of 15 m for each heating area.

The walls 10, 12 of the head channel 11 are provided with openings 13 for the introduction and execution of supply and discharge lines or a rectilinear implementation of the tubes 6, 7 is provided.

Furthermore, in the reversal area 5 there is a special design of the guide pieces present there for those that run curved here Pipes provided by the lower egg-shaped guide pieces 14 with openings 15 for a rectilinear implementation are provided by pipes. In this way, for example, a shaped plate can also be used as a connection plate for a straight line continuation of the pipelines from a neighboring plate can be used.

In this way, the mold plate designed according to the invention creates the possibility of only one uniform

bilateral
Form plate sjiohl to use for the / reversal areas as well as the straight areas of the pipe guide in a heating surface and, if they are normally formed in a size of 1 square meter

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Molded panels in these dimensions are not in harmony with the area of the room, even with compositions provided with break notches 17, which facilitate a snug fitting break apart for adaptation to the respective area dimensions.

Another very important special feature is present in the illustrated embodiment of the invention insofar as in Reversal area 5 through the arcuate guide pieces 14 laterally limited guide channels 16 in their lateral area with respect to the axes of the channels 2 in the straight area run bent on the outside, so that despite a very narrow channel spacing, the bending radius of the laid pipes is larger than inherently caused by this small channel spacing.

FIGS. 7 to 10 each show 4 sectional views, namely FIG. 7 a section along the line A-A, FIG. 8 a section according to the line B-B, Figure 9 is a section according to

and Figs. 10 C-C,.

the line D-D / of the preceding Figures 4-6. From these representations the size and depth as well as the arrangement of the channels in the various areas can be seen, with how mentioned, in the reversal area, the depth of the channels corresponds to twice the outer diameter of the tubes and, as shown in FIGS As can be seen, a gradient transition from the normal channel depth equal to a pipe diameter is provided at the required points is.

In the representation of the known designs in Figures 1 to 3, it is customary to place the tubes 6 and 7 in the area of their straight lines Course to include on their underside and on their side surfaces with heat conducting sheets 8, which each as Sheet metal strips are formed for each individual channel.

Although in the invention the same design of heat conducting plates is possible, there is another proposal of the invention dirin, these heat conducting plates according to Figures 11 and 12, respectively

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for a Pormplatteneinheit or for half a mold plate with respect to the width and optionally also the length to be combined to form a sheet metal unit in each case, with one in FIG illustrates shorter execution of this sheet metal plate for the denomination is.

In addition, there is an essential proposal of the invention also in providing these heat conducting plates in the reversal area of the mold plates in order to ensure good heat transfer here as well guarantee. In the reverse area, metal inserts are then used, which are preferably made by casting and as a whole correspond to the profiling of the reversal area, as shown in FIGS. 4 to 6, identically.

It should also be mentioned that, according to the invention, when the heat-conducting plates are designed according to FIGS. 11 and 12, they are also laid Heat conducting sheets in a kind of wall association is possible, .which means that the butt joints between two molded plates through the heat conducting sheets then each bridged to increase the mechanical strength.

With regard to the transitions between two adjacent mold plates towards the side it should be emphasized that, as shown in the drawing Fig. 4-6, the outer edge channel in each case on both sides of the edge of the mold plate by half the distance of the channels in the mold plates.

The material used for the mold plates is a fire-proof, thermal insulation material used.

All details which can be recognized in the description and illustrated in the drawings are of importance for the invention.

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Claims (1)

Β4ΤΕΝΤΛΝΙ4ΑΕ * BROSE ^D BROSE D-B023 Munchen-Pullach. Wiener Str 2 "· ί \ (G89i7 93 30 7 * ^x e \ erb 212 ui t» os ^ J CiiUies • 'f'.itenhbtis ·· Μυπι.ηι: · ι Dietrich Probst, Hegewiese 49, D-6384 Schmitten 1 IQ - 'Ί ^v: -1 Your sign. Day 10 August 1979 Yourref Date 1 / V ₁ (5 PATENT CLAIMS 1. Heat exchangers (radiators or heat absorbers) with meandering pipes in such a way that the lines for flow and return of the medium run alternately next to each other in their straight areas and cross each other in their reversal areas at both ends of the straight areas, the pipes in Channels of prefabricated Pormplatten laid and are enclosed in their straight area on their underside and the two long sides of heat conducting plates, characterized in that the channels (2) of the molded plates (1) for different, depending on the specific heat output required, the laying distances of the Pipes (6, 7) are arranged at the same distance from each other in the straight area (2) and ^{are equipped with guides in the reversal area (1} J) which are shaped and arranged to accommodate pipes of different bending radii and different pipe spacings. 2. Apparatus according to claim 1, characterized in that the channels (2) in the mold plates (1) in one 130008/0529 _ · O ■ _ are evenly spaced from each other, which the Laying distance of the pipes (6, 7) for the largest required specific Heat output corresponds. j. Device according to Claim 1 or 2, characterized in that the laying distance depends on the required thermal output of the pipes (6, 7) A = 1On (where η is a natural number). 4. Device according to one or more of the preceding Claims, characterized in that the frontal cavity (9) is limited in the reversal area (5) by a straight channel wall (10). 5. Device according to one or more of the preceding claims, characterized in that above the straight line front channel wall (10) an additional head channel (11) is provided for receiving inlet and outlet lines. 6. Device according to one or more of the preceding claims, characterized in that the walls (10, 12) of the head channel (11) with openings (13) for one or Execution of supply or discharge lines or a straight implementation of the pipes (6, 7) is provided. 7. Device according to one or more of the preceding Claims, characterized in that in the reversal area (5) provided guide pieces (14) for the tubes (6, 7) with Breakthroughs (15) for a straight implementation of pipes (6, 7) are provided. 8. Device according to one or more of the preceding claims, characterized in that the guide ^{channels (16) laterally limited by the arcuate guide pieces (I 1} O in the reversal area) in their lateral area relative to the axes of the channels (2) in the straight area (4) after 130008/0529 curve on the outside. 9- Device according to one or more of the preceding claims, characterized in that the heat conducting plates (8) a coherent plate of several side-by-side channels, preferably of the width of the respective one Form plate (1). 10. Device according to one or more of the preceding claims, characterized in that the head channels (11) are dimensioned such that they give the tubes (6, 7) sufficient freedom of movement with respect to their axial thermal expansion Offer. 11. Device according to one or more of the preceding claims, characterized in that the edge channels jewe.il » are arranged at half the distance from the side edge of the mold plates (1). 12. The device according to one or more of the preceding claims, characterized in that the reversal areas (b) are equipped with heat conducting plates of the same profile. 130008/0529